/**
 * @Author Big_white
 * @Date 2021/11/11
 */
public class TheaterLight {
    private static TheaterLight instance=new TheaterLight();
    public static TheaterLight getInstance(){
        return instance;
    }
    public void on(){
        System.out.println("TheaterLight on");
    }
    public void off(){
        System.out.println("TheaterLight off");
    }
    public void dim(){
        System.out.println("TheaterLight dim");
    }
    public void bright(){
        System.out.println("TheaterLight bright....");
    }
}
